Home / 20,238.08-30,327.76-10,870.72

Finding the Fourth Proportional to 20,238.08, 30,327.76 and 10,870.72

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Solution

The fourth proportional to 20,238.08, 30,327.76 and 10,870.72 is: 16,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.08 : 30,327.76 = 10,870.72 : x
  2. Step 2: Convert to fraction form
    20,238.08/30,327.76 = 10,870.72/x
  3. Step 3: Cross multiply
    20,238.08x = 30,327.76 × 10,870.72
  4. Step 4: Simplify right side
    20,238.08x = 329,684,587.19
  5. Step 5: Solve for x
    x = 329,684,587.19/20,238.08
  6. Step 6: Final answer
    x = 16,290.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.